(19)
(11) EP 2 828 463 A1

(12)

(43) Date of publication:
28.01.2015 Bulletin 2015/05

(21) Application number: 13764702.0

(22) Date of filing: 22.03.2013
(51) International Patent Classification (IPC): 
E21B 10/30(2006.01)
(86) International application number:
PCT/US2013/033412
(87) International publication number:
WO 2013/142752 (26.09.2013 Gazette 2013/39)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 23.03.2012 US 201213428916

(71) Applicant: Baker Hughes Incorporated
Houston, TX 77210-4740 (US)

(72) Inventors:
  • OESTERBERG, Marcus
    Spring, TX 77345 (US)
  • ROSENBLATT, Steve
    Houston, TX 77006 (US)

(74) Representative: Mabey, Katherine Frances 
Dehns St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) REAMING SHOE FOR INCREASED BOREHOLE CLEARANCE